Attachment for motor vehicles



March 24, 1925.

H. F. SCRUBY ATTACHMENT FOR MOTOR VEHICLES Filed 'Api-11 19, 1924 2 sheets-sheet 1r ttor nu March 24, 1925. r1,530,577

H. F. scRuBY ATTACHMENT FOR MOTOR VEHICLES Filed Apl 19. 1924 2 Sheets-Sheet 2 Patented Mar. 24, 1925. n

HORACE F. BGRUBY, 0F LOS ANGELIES, CALIFORNIA.

ATTACHMENT FOR vMOTOR VEHICLES.

Application led April 19, 1924. Serial No. 707,782.

To all whom t may concern.'

Be it known that I, HORACE F. Scnur, a citizen ,of the United V`States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in- At tachments for Motor Vehicles, of which the following is a specification.

This -invention relates to attachments for motor vehicles, and more particularly to means for building up a pressure in the exhaust pipe for the purpose of performing useful work.

In carrying out the invention, I provide a casing arranged in the exhaust line, the casing having a main passage for normal -flowof exhaust gas, and a valve arranged therein whereby the fiow of gas through the exhaust assage may be arrested. I further provide a secondary passage in the casing arranged on the inlet side of the valve at such an 'angle to the main passage that the normal flow of gas through 'the main passage will act as an ejector to withdraw gases from the secondary passage.

In normal operation, a slight pressure exists in the exhaust pipe of a motor vehicle and this pressure would ordinarily be transmitted to any pipe or conduit leading from the exhaust passage. By providing the secondary passage at such an angle that the iiow of gases through the main pipe acts as an ejector, a slight vacuum 'is normally maintained in the secondary passage and the apparatus connected thereto.

In the accompanying drawings, I have shown one embodiment of the invention. In this showing:

Figure 1 is a diagrammatic view of an internal combustion engine showing the invention applied,

Figure 2 is a centralvertical sectionalv view through the valve casing,

Figure 3 is a transverse vertical sectional view on line 3--3 of Figure 2,

Figure 4 is an endl elevation of the valve casing.

Figure 5 is a side elevation of a fluid pressure brake, and,

Figure 6 is a vertical sectional view'of they brake.

Referring to the drawings, the reference numeral 1 designates. an 1nternal combustion engine of any type'having the usual exhaust manifold 2 connected to an exhaust pipe 3. The parte heretofore described are of the usual construction and form no part of the present invention, except in the combination claimed.

In providing means for building up ya pressure in the exhaust pipe for the purpose of performing useful work, I employ a valve casing arranged in the exhaust pipe -and consisting of two sections 4 and 5,

each of which is provided with a'iiange 6 at its inner end and these anges are adapted to receive bolts 7 by means of .'hich the two sections are secured to each other. The outerends of each section are provided with circular passages 8 for the reception of the ends of the sections of the exhaust pipe. As shown, these end portions of the valve casing are provided with slots 9 and are further provided with lugs 10 through which bolts are adapted to be passed to draw the ends of the valve casing around the exhaust pipe and'form a gas tight jqint.

Within the section 5 of the valve casing,

there is formed a valve seat 11 adapted valve seat. when it is in closed position.

The yoke 14 is mounted on a shaft 15 4extending transversely cf the valve casing and arranged in suitable bearing portions 16 in the side walls of the valve casing. The yoke is secured to this shaftl bv means of a set screw 17 or other suitable fastening element. The shaft extends exteriorly of the casing and is provided with an arm 18. This arm is adapted to be connected to suitable actuating mechanism arranged adjacent the drivers seat. .As shown, a link 19 may be connected to the outer end of the arm 18 and the link is in turn connected to a foot pedal 20 mounted in the vehicle.

The valve casing is provided with a secondary passage 21 arranged at an angle to the main passage as shown, and a pi e 22 leads through this passage to any suitable apparatus that may be operated within the limits of pressure capable of being built up .in theA exhaust pipe. In Figure 1 of the drawings, I have diagrammatically i1- lustrated, a Huid pressure brake 23 con- `Aarranged therein.

nedted tothe pipe 22. The detail construction of the brake is shown in Flgures 5 and 6 of the drawings and is substantially the same as that disclosed and claimed in my prior Patent No. 1,482,661, granted February 5, 1924. As shown, the brake drum consists of a pair of parallel plates or -disks 24 and 25 which are adapted to be secured to a vehicle wheel 26 by means of bolts 27. The outer disk is provided with a central opening 28 and this opening is closed by a statlonary plate or disk 29. Within the casing, there 1s` provided a pair of friction rings 30 and 31 which are normally spaced-from the inner face of the disks 24 andv 25 and are adapted to engage these disks when moved laterally. These rings are mounted on a pair of supporting members 32, the supporting members being stationary and being carried by pins 33 extending through the plate 29. Suitable springs 34 may be arranged on the pins or bolts 33 to normally retain the friction rings in inoperative position. An expansible member 35 is arranged between the supporting members 32 and the interior of the expansible member is provided with a tube 36 which extends through the opening 28 and through a slot in the plate 29. This tube ,is connected to the pipe 22.

The installation and operation of the de vice will be apparent from the foregoing description. The exhaust pipe is split intermediate its ends and the valve casing Bolts are arranged in the openings in the lugs 10 and tightened to form gas-tight -ioints between the valve casing andthe sections of the exhaust pipe. The valve 12 is normally in the posltlon shown in dotted lines in Figure 2 of the drawings, permitting an unobstructed iiow of exhaust gases through the apparatus.

When the valve is in open position, theV exhaust functions in its ordinary manner. The arrangement of the secondary passage 21 is such that any gases in the pipe 22 will be withdrawn by the -flow of gases through the exhaust pipe. This is important in using the apparatus for certain purposes, such as, for instance, the operation of fluid brakes. Normally, a pressure of from 1/2 to 11/2 pounds per square inch exists in the exhaust pipe of an internal combustion engine when the engine is running and if the secondary passage 21 was so arranged that this pressure was communicated thereto, the pressure would cause the brakes to drag at all times. By arranging the passage in thel manner shown, a slight vacuum is created therein and unintentional operation of the brakes avoided. When a pressure is to, be built up in. the

exhaust pipe for the purpose of operatingv the brakes or performing any other useful work, the valve 1 2 is arranged in the full ranged in the exhaust ber 35 or other aplparatus.

It is to be un erstood that the form of my invention herewith shown and described is to be taken as a preferred exam le of the same, and that various changes 1n the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

I claim:

1. An attachment for motor vehicles comprising a valve casing adapted to be aripe of an internal combustion engine, said) casin bein provided with a main passage, an a va ve arranged in said passage, said casing being further provided with a secondary passage arranged at an angle to' the main passage whereby the iow of gases through the main passage when the valve is open will withdraw gases from said secondary assage.

2. An attachment for motor vehic es c omprising a valve casing adapted to be arranged in the exhaust pipe of an internal combustion engine, said casing being provided with a main passage, and a valve arranged in said passage, said casing being provided with a secondary passage adjacent the inlet end of said main and arranged at an acute angle to said main passa e.

3. n attachment for motor vehicles comprising a valve casing adapted to be arranged in the exhaust pipe of an internal combustion engine, said casing being provided with a main passage and being further provided with a secondary passage communicating therewith and arranged at an angle thereto whereby passage of gases through said main passage will withdraw gases from said secondary passage, a valve pivotally mounted in said casing and adapted to close said main passage when the valve is in closed position, and operating means for said valve. v

4. An attachment for motor vehicles comprising avalve casing adapted to be arranged in the exhaust pipe of an internal combustion engine, said casing being provided with a main passage and being further provided with a secondary passage communicating therewith and arranged at 5. Thev combination with4 the exhaust pipe of a motor Vehicle, of a valve casing arranged therein, a valve mounted in said casing, and an auxiliary conduit connected to said valve casing on the inlet side of said valve whereby a pressure will be built up in said conduit for. the performance of useful Work when `the valve is in closed position, said conduit being arranged at such an angle to the exhaust pipe that a. reduced 1 pressure will be created in lsaid conduit when the valve is in open position.

In testimony'whereof, I aix my signa,- ture in presence of two witnesses.

' 'HORACE F. SCRUBY.

Witnesses: p

O. W. WINKLER', CEAS. A. SCRUBY. 

